Sudoku Suprême n° 037 : Page 77 - Gr 74
L8C5 =7= L2C5 -7- L2C2 =7= L3C2 -7-8- L3C2 =8= L5C2 -8- L5C8 =8= L7C8 -8-7- L7C8 =7= L8C8 donc L8C46 ≠ 7